C#'s Expression<T> is almost exactly what you use in your example, baked into the language - you specify a lambda but the compiler emits construction of an expr

C#'s Expression<T> is almost exactly what you use in your example, baked into the language - you specify a lambda but the compiler emits construction of an expression tree. https://docs.microsoft.com/en-us/dotnet/api/system.linq.expressions.expression-1?view=netframework-4.8 https://docs.microsoft.com/en-us/dotnet/api/system.linq.expr... https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/concepts/expression-trees/ https://docs.microsoft.com/en-us/dotnet/csharp/programming-g...